Liquid & Solids RT 2022

The force of attraction between the atoms of helium

• Hydrogen bonding

• Coordinate covalent bond

• Covalent bond

• London dispersion force

Crystal lattice of the substances can be categorized into

• Five types

• Seven types

• Six types

• None of these

When vapour pressure is equal to atmospheric pressure then it is called

• Evaporation

• M. P.

• B. P.

• Freezing point

Which is the correct order of stability?

• Hydrogen bonding > dipole-dipole> London forces

• Dipole-dipole > London forces > Hydrogen bonding

• London forces > hydrogen bonding >dipole-dipole

• Hydrogen bonding > London forces > dipole-dipole

Ionic bond, covalent bonds and coordinate bonds are

• Intermolecular forces

• Intramolecular forces

• Hydrogen bonding

• Dipole-dipole interaction

Atmospheric pressure in Murree is

• One atm.

• 0.921 atm.

• 2.921 atm.

• 1.921 atm.

Amount of heat required to convert one mole of liquid into vapours at a given temp.is called

• Heat of evaporation

• Latent heat of vaporization 

• Molar heat of vaporization

• None

Which is an amorphous solid?

• NaCl

• NaOH

• Diamond

• Rubber

Molecular crystals are generally

• Hard

• Soft 

• Unstable

• Stable

Amorphous solid

• Have sharp melting points

• Undergo clean cleavage when cut with knife

• Have perfect arrangements of atoms

• Can possess small regions of orderly arrangements atoms